Well, I hope there's there's not much grinding involved! I just went ahead and ordered a set of 15x10's from Summit. Hell of a price, too. $240 delivered via 2-day! Now time to see if there's a deal on tires floating around. So far I'm looking at the Dunlop Mud Rovers in 35x12.50 which are $518 shipped from Tirerack. Can't wait to get some meat under this beastly old truck!